114results about "Line-faulsts/interference reduction" patented technology

The invention discloses a high-integration intelligent ignition head device and an automobile safety communication power supply system thereof. The device comprises an input unit, a power management module, a communication module, a communication judgment module, an MCU, a voltage sensing module, a current sensing module, an ignition control module, an ignition element and a substrate, and an environment self-adaption unit, a dual-mode wireless energy supply unit and an optical fiber diagnosis channel can be additionally arranged. The system adopts the device, communicates with a central control unit through a redundant optical fiber bus and a double-wire bus, and further comprises the central control unit, a dynamic topology reconstruction unit and a pre-ignition energy distribution unit. Through digital signal control, multi-dimensional sensing module integration and a double-wire bus topological structure, ignition threshold multi-stage protection, state real-time monitoring and feedback, multi-ignition-head parallel independent control and miniaturized function integration are achieved, and the reliability, the intelligent degree and the driving efficiency of an automobile safety system are improved.

Joint denoising and compression of channel state information (CSI) feedback may be performed. An example device may include a processor configured to perform one or more actions. The device may receive configuration information that indicates a latent mode of operation and an encoder model. The device may receive CSI reference signals from a network node. The device may generate an estimated channel matrix based on the CSI reference signals. The device may generate a latent representation of the estimated channel matrix based on the latent mode of operation and the encoder model. The device may send the latent representation of the estimated channel matrix to the network node.

The invention discloses an environmental interference suppression method and system applied to a multi-source repeater signal, relates to the technical field of signal interference, and comprises the following steps: configuring basic parameters of a target repeater according to base station information, avoiding conflicts with conditions of surrounding base stations during subsequent environmental interference suppression and gain, providing a basis for subsequent suppression, and improving the interference suppression efficiency. And safe operation of peripheral base stations is ensured. A terrain interference index and a boundary range between different terrain types are defined, a reliable basis is provided for interference evaluation, and the description precision of an interference model is improved. Regional classification is carried out on interference conditions in a coverage range of a target repeater through a terrain interference model, an environment interference suppression strategy is set for each level of region, and evaluation and feedback adjustment are carried out on the environment interference suppression strategy by virtue of a suppression effect parameter table, so that closed-loop adjustment and feedback of suppression measurement are realized; the signal propagation effect is improved, and the adaptability and reliability of environmental interference suppression are ensured.

The invention discloses a holographic electromagnetic wave signal transmission method and system based on a mine shaft, and relates to the technical field of signal transmission, and the method comprises the steps: obtaining mine shaft environment parameters and holographic electromagnetic wave signal basic setting parameters, carrying out the multipath propagation analysis based on the mine shaft environment parameters, and obtaining the multipath propagation characteristic data; performing signal delay spread simulation analysis on the multipath propagation characteristic data to obtain signal delay spread data, and performing inter-symbol interference association mining based on the signal delay spread data to obtain inter-symbol interference association data; signal modulation optimization design is carried out according to the intersymbol interference associated data, signal modulation optimization data are generated, holographic electromagnetic wave signal transmission planning is carried out through the signal modulation optimization data, holographic electromagnetic wave signal transmission planning data are obtained, and then signal transmission operation in the mine shaft is guided according to the holographic electromagnetic wave signal transmission planning data. The method has the effect of improving the holographic electromagnetic wave signal transmission efficiency.

This application discloses a signal reconstruction method, apparatus, electronic device, storage medium, and product. The method includes: acquiring a mixed signal to be processed; performing M-level wavelet decomposition on the mixed signal based on orthogonal wavelets to generate M high-frequency components and one low-frequency component; determining an adaptive filtering threshold corresponding to each high-frequency component, and performing hierarchical threshold filtering on the high-frequency components based on the adaptive filtering threshold to generate corresponding high-frequency target components; determining a hard filtering threshold corresponding to the low-frequency component, and performing threshold filtering on the low-frequency components based on the hard filtering threshold to generate corresponding low-frequency target components; and reconstructing the M high-frequency target components and the low-frequency target component to generate a target signal. This solution can remove ultra-low frequency drift signals from the mixed signal while also performing hierarchical threshold filtering to remove high-frequency noise from the mixed signal, significantly improving the algorithm's tracking ability and anti-interference performance for non-stationary signals.

The invention relates to the technical field of industrial control system physical layer state monitoring, and discloses an electromagnetic shielding effectiveness control system of a communication equipment connector, which comprises a protocol time sequence synchronization module, an idle noise acquisition module, a state identification and processing module and a decision and interface module, and after determining that continuous noise drift exists, the state identification and processing module firstly suppresses alarm output, communicates with other similar systems in a neighborhood so as to judge cooperative drift, and only releases suppression and outputs an alarm when determining that non-cooperative drift exists. An originally isolated single-point decision which may generate misjudgment due to global environment fluctuation is converted into a system-level diagnosis conclusion which is based on distributed consensus and can clearly distinguish local failure of the connector from global environment change, and the accuracy and reliability of state evaluation of the industrial control system in a complex electromagnetic environment are improved.

The invention relates to an interference elimination method and device and computer equipment. The method comprises the following steps: receiving an initial time domain signal on a time-frequency resource of a serving cell; wherein the initial time domain signal is a superposed signal of a first physical broadcast channel (PBCH) signal from a serving cell and a second PBCH signal from a same-frequency interference cell of the serving cell; pBCH decoding is carried out on the initial time domain signal to obtain first cell information; wherein the first cell information comprises a target synchronization signal of the first cell and PBCH block SSB center frequency point information; determining the first cell as a same-frequency interference cell according to the cell center frequency point information and the target SSB center frequency point information, and performing same-frequency interference elimination on the initial time domain signal according to the cell center frequency point information; wherein the cell center frequency point information comprises the actual SSB center frequency point information of the service cell and the actual SSB center frequency point information of the same-frequency interference cell. The method can effectively eliminate the same frequency interference and improve the communication quality.

This invention belongs to the technical field of aviation transponder pulse overlap signal separation methods, specifically relating to a separation method applicable to Mode A / C aviation transponder pulse collision conditions. By analyzing the differential characteristics of the Mode A / C aviation transponder signal waveform in the time and energy domains, the pulse collision signal is effectively split. Based on the waveform definition characteristics of the Mode A / C aviation transponder signal, the pulse frame is accurately recovered from the separated signal, ultimately completing the separation process of the Mode A / C collision pulse signal. This invention requires only a single-channel receiver to achieve signal separation, reducing system implementation costs and engineering difficulty, effectively improving the system monitoring capability in densely overlapping electromagnetic environments, and providing an efficient and engineered solution for transponder pulse signal separation tasks in scenarios such as air traffic surveillance and low-altitude airspace management.

The invention provides a signal modulation identification method and system in an interference environment based on a neural network, and the method comprises the steps: obtaining a to-be-identified interference environment signal, inputting the to-be-identified interference environment signal into an interference adaptation module, and carrying out the correlation modeling of an interference feature and a signal feature, thereby obtaining an interference adaptation feature; inputting the interference adaptive features into an interference suppression layer of a signal modulation identification neural network, and carrying out interference component separation to obtain signal purification features; inputting the signal purification features into a modulation classification layer for modulation mode matching to obtain a preliminary modulation type identification result; then, the preliminary modulation type recognition result and interference type information in the interference adaptation features are subjected to correlation verification, and a final modulation type recognition result is obtained; and finally, generating a signal identification report containing modulation parameter description based on a final result, and sending the signal identification report to a target signal analysis terminal. The method can effectively cope with a complex interference environment, improves the accuracy and reliability of signal modulation identification, and provides powerful support for optimization of a communication system.

This invention provides an optimized system for improving the slew rate of a Line Driver, comprising a differential input module, a bias current module, an amplification module, an active load module, and a mirror load module. The differential input module receives the input signal and converts the voltage signal into a current signal. The bias current module provides a stable bias current to the circuit. The amplification module receives the current signal from the differential input module and achieves voltage gain. The amplification module is electrically connected to the active load module. The active load module can improve the amplification gain of the amplification module, replicate the current, and stabilize the output node. The mirror load module can replicate the signal amplification path of the amplification module to achieve symmetrical output, thereby improving the signal amplification effect and anti-interference reliability of the circuit and solving the problem of limited slew rate in traditional optimized systems for Line Drivers.

The application discloses a wireless ranging method and device of a power carrier dual-mode communication system, and belongs to the technical field of power carrier communication. The method comprises the following steps: receiving wireless signals sent by a sending end successively, and performing frequency domain transformation on the wireless signals to obtain frequency domain response signals; obtaining an impulse response signal of the frequency domain response signals in a time domain; calculating a multi-path gravity center of the impulse response signal under a multi-path channel condition, and determining a synchronization timing deviation corresponding to the wireless signals based on a deviation between the multi-path gravity center and a main path; calibrating sampling clock frequencies of the sending end and the receiving end based on the synchronization timing deviations corresponding to the wireless signals received successively, and performing a ranging operation after the calibration to obtain a ranging result. The application can realize accurate and stable wireless ranging for each node in the power carrier dual-mode communication system.

The utility model relates to the technical field of industrial communication interfaces, in particular to an RS485 self-adaptive communication circuit with intelligent reflection suppression. The circuit comprises an RS485 chip, an automatic transceiving circuit and a micro-control unit, the enabling end of the RS485 chip is connected with the micro-control unit through the automatic transceiving circuit, and the transceiving state of the RS485 chip is controlled by the micro-control unit; the circuit is characterized in that an electromagnetic compatibility circuit is arranged between the input and output ends of the RS485 chip and the wiring terminal, and the electromagnetic compatibility circuit comprises a transient voltage suppression circuit, a resettable fuse, a pi-type filter circuit and a gas discharge tube. According to the utility model, the EMC circuit is improved, the circuit protection capability is increased, and the inter-stage coupling interference is reduced; an automatic transceiving circuit is improved, and transceiving state switching time is shortened. Meanwhile, the number of capacitive elements in the voltage acquisition circuit and the current acquisition circuit is reduced, and stray capacitance and signal rising time are reduced.

The present application provides a communication method and a communication apparatus. The method comprises: receiving first indication information, the first indication information indicating a first port and a second port; receiving first data of the first port, the first data being obtained by precoding on the basis of a first precoding matrix, and the first precoding matrix being determined on the basis of a first multipath parameter of the first port; and demodulating the first data on the basis of the first precoding matrix and a second precoding matrix, the second precoding matrix being determined on the basis of a second multipath parameter of the second port. The first port and the second port can be determined by means of the first indication information. Therefore, when demodulating the received data, precoded by means of the first precoding matrix, of the first port, a multipath parameter of the second port can be used for interference processing, thereby improving the performance of data demodulation.

The invention discloses a robust self-interference suppression beamforming method based on a multi-missile collaborative scene, which comprises the following steps of: considering a non-ideal condition, constructing a coupling channel model containing a circular symmetry Gaussian distribution error, and constructing an expression of power of a transmitting signal and a self-interference signal. Based on a self-interference signal power expression, an optimization problem for self-interference suppression transmitted beam forming with robust estimation errors is constructed; wherein the optimization target is set to maximize the transmitting beam gain; the set constraint condition is that it is ensured that the power of self-interference signals coupled to all receiving array elements in the receiving sub-arrays is smaller than a set upper limit threshold value; and transmitting link full-feed power upper limit constraint. According to an optimization problem, an original non-convex opportunity constraint problem is converted into a convex problem to be solved through an approximation method of positive semi-definite relaxation and a Bernshi inequality, so that a transmitted beam weight vector solution is obtained, the robust self-interference suppression capability under a non-ideal coupling channel is realized, and normal receiving of a desired signal is ensured.

An electromagnetic tracking (EMT) system is configured for determining a frequency for generating at least a portion of a magnetic field signal using a transmitter coil of a plurality of transmitter coils. The EMT system configures a time-division multiplexed (TDM) control signal configured to cause the transmitter coil to transmit bursts of the magnetic field signal at the frequency. The EMT system configures a filter for filtering the TDM control signal, the filter configured to shape each burst to reduce or eliminate a harmonic artifact of the bursts. The EMT system causes the transmitter coil to generate the shaped bursts of the magnetic field signal. The EMT system receives, from a sensor, a sensor signal that corresponds to the magnetic field signal, the sensor including the output response indicative of the location of the sensor relative to the transmitter.

The utility model relates to communication technical field, concretely is a kind of gigabit ethernet port protection circuit.The protection circuit includes: difference signal positive electrode circuit and difference signal negative electrode circuit, for forming signal transmission path;Difference impedance matching circuit is used to suppress signal reflection;Power filter network circuit is used to filter high-frequency noise and suppress common-mode interference.The circuit architecture design of the utility model systematically solves the core technical problem in the high-speed transmission of gigabit ethernet port.In the signal transmission level, two-stage resistance-capacitance isolation and dynamic impedance matching mechanism construct the parameter self-adaptive signal transmission path, through the impedance buffer of series resistance, the direct current isolation of coupling capacitor and the dynamic adjustment of difference pair network, effectively suppress signal reflection and direct current bias interference, ensure the integrity of 10Gbps high-frequency signal in long-distance transmission.

The invention discloses a channel estimation method, related equipment, a storage medium and a computer program product. The method comprises the steps that a sending device determines a first symbol and first information, the first symbol is used for indicating semantics of an information source, and the first information is used for indicating the importance degree of the first symbol on information source reconstruction; in the process of superposing a second symbol to the first symbol, power is allocated for the first symbol and the second symbol based on the first information, and the second symbol is used for channel estimation; and sending the superposed first symbol to a receiving device through a first channel, the first channel having at least the characteristics of time selective fading and frequency selective fading. According to the technical scheme provided by the invention, under the scene of double selective channels, the pilot symbols are superposed on the semantic symbols, and the distribution of the pilot power is dynamically adjusted in combination with the importance of the semantic symbols, so that more accurate channel estimation and stronger anti-interference capability can be realized.

The invention discloses a link training method and system, electronic equipment and a storage medium, and relates to the field of data processing. The method comprises the following steps: acquiring a plurality of stable intervals of a differential link based on a fixed delay step length and a training code; calculating the ratio of each stable interval to the unit interval of the differential link; selecting a stable interval of which the ratio is an odd number after rounding up as an effective interval; and delaying the clock signal or the differential signal based on the delay amount corresponding to the central point of any effective interval so as to realize data alignment. On the basis of the processing, the effective interval with the ratio being an odd number after rounding up is selected, the stable interval with the center point not being the jump area is screened out, and therefore in the subsequent data alignment process according to the center point of the effective interval, the error that the collection edge of the clock signal is located in the jump area can be avoided.

A battery system, according to one embodiment of the present invention, may comprise: an upper BMS; and a plurality of lower BMSs. Here, the upper BMS and the lower BMSs may be communicatively connected via a communication bus. In addition, each of the lower BMSs may be connected to a filter for reducing communication noise, and the upper BMS may be connected to a compensation circuit for compensating for attenuation of a communication signal caused by the filters.

This invention relates to the field of data communication technology and discloses a system for data transmission between a terminal device and a host computer. The system includes a terminal device, a host computer, and a switching control module. The terminal device utilizes its existing charging contacts to perform both charging and data transmission functions. The switching control module automatically switches between the charging path and the communication path, solving the problems of easy failure in existing wireless transmissions and the increased terminal size due to the need for additional connectors in wired transmissions. This invention reuses the two existing charging contacts of the terminal device as communication contacts, eliminating the need for additional communication interfaces or contacts, effectively controlling the size and hardware cost of the terminal device, and meeting the lightweight design requirements of small terminals and portable devices. The host computer's adapter interface integrates charging and communication functions, eliminating the need for separate charging and communication cables, simplifying the connection process.

The invention discloses a signal denoising and carrier synchronization method and device of a continuous wave mud pulse system, and belongs to the field of measurement while drilling in petroleum drilling. The method comprises the following steps: S1, preprocessing a collected mud pulse signal; s2, adjusting a noise covariance matrix of an adaptive Kalman filter in real time based on an expectation maximization algorithm, and reconstructing and filtering harmonic waves of each order of pump noise through a pump noise linear time-invariant space state model by using the adjusted adaptive Kalman filter; s3, filtering random noise by adopting a wavelet threshold denoising method; s4, performing frame synchronization on the denoised signal by using the m sequence; s5, demodulating the mud pulse signal by adopting a BPSK (Binary Phase Shift Keying) orthogonal demodulation technology; and S6, adjusting a noise covariance matrix of the unscented Kalman filter in real time based on an expectation maximization algorithm, and estimating and compensating the phase offset by using the adjusted unscented Kalman filter through the nonlinear state space model of the phase offset and the frequency offset.

Communications method and apparatus include encoding information into a high-peakedness designed pulse train, converting the designed pulse train into a low-peakedness signal suitable for modulating a narrowband carrier to generate a physical communication signal with desired spectral and temporal properties, and generating and transmitting the physical communication signal. The communications method and apparatus also include receiving and demodulating the physical communication signal, and further converting the demodulated signal into a high-peakedness received pulse train corresponding to the designed pulse train, so that the encoded information may be extracted from the received pulse train.

Systems and method for encoding and decoding ultra-wide band (UWB) communication signals, wherein encoding includes block interleaving at either bit-level or symbol-level following convolutional encoding, and wherein decoding includes block de-interleaving UWB symbols or log-likelihood ratios (LLRs) prior to convolutional decoding. Decoding may further include detecting and nulling (or lowering) outlier UWB symbols or LLRs determined to be affected by interference, prior to block de-interleaving.

A method for determining a vortex wave phase offset is performed by an access network device. The method includes: determining vortex wave phase offsets used by adjacent access network devices, so as to obtain a first set of vortex wave phase offsets; and determining a target vortex wave phase offset according to the first set of vortex wave phase offsets and a pre-configured set of available vortex wave phase offsets.

The invention discloses a wireless signal channel estimation method in dual-mode power line carrier communication and electronic equipment, and belongs to the technical field of power line carrier communication. The wireless signal channel estimation method in the dual-mode power line carrier communication comprises the following steps: performing frequency domain transformation on an OFDM symbol corresponding to a long training domain to obtain a first frequency domain signal and a first channel estimation result corresponding to the long training domain, and performing frequency domain transformation on an OFDM symbol corresponding to a control word domain to obtain a second frequency domain signal; performing compensation and hard decision processing on the second frequency domain signal to eliminate channel influence, obtaining a processed second frequency domain signal, and obtaining a second channel estimation result corresponding to the control word domain; performing frequency offset estimation based on the first channel estimation result and the second channel estimation result to obtain a final frequency offset estimation result; and / or obtaining a third channel estimation result based on the first channel estimation result and the second channel estimation result. According to the invention, the precision and robustness of channel estimation are improved.

This invention provides a method and system for signal modulation identification in interference environments based on neural networks. The method involves acquiring the interference environment signal to be identified, inputting it into an interference adaptation module to perform correlation modeling between interference features and signal features, obtaining interference adaptation features; then, inputting the interference adaptation features into the interference suppression layer of the signal modulation identification neural network for interference component separation, obtaining signal purification features; next, inputting the signal purification features into a modulation classification layer for modulation mode matching, obtaining preliminary modulation type identification results; then, correlating and verifying the preliminary modulation type identification results with the interference type information in the interference adaptation features, obtaining the final modulation type identification result; finally, generating a signal identification report containing modulation parameter descriptions based on the final result and sending it to the target signal analysis terminal. This invention can effectively cope with complex interference environments, improve the accuracy and reliability of signal modulation identification, and provide strong support for the optimization of communication systems.

The embodiment of the invention provides a single-tone interference processing method and system, and relates to the technical field of wireless communication. The method comprises the following steps: converting symbols of a time domain into a plurality of subcarriers of a frequency domain; determining a first maximum power value of the subcarrier among the plurality of symbols so as to record the position of the subcarrier corresponding to the first maximum power value; determining an interference subcarrier in the subcarriers based on a counter, and recording the power of the interference subcarrier and the position of the interference subcarrier; and under the condition that the direct-current interference and the interference subcarrier of the transmitting end and the residual direct-current interference of the receiving end exist, processing the direct-current interference and the interference subcarrier of the transmitting end and the residual direct-current interference of the receiving end in sequence based on a preset priority. Through one embodiment of the invention, the problem of low processing efficiency of the single-tone interference in a complex scene in the related technology is at least solved, and the effect of improving the processing efficiency of the single-tone interference in the complex scene is further realized.

A signal transmission system (10) is provided with: an elliptical wiring conductor (3) having two focal points (3a, 3b); a GND conductor plate (4) disposed so as to face the wiring conductor (3); a driver (1) connected between one focal point (3a) of the wiring conductor (3) and the GND conductor plate (4); a plurality of receivers (2a, 2b, 2c) connected between the wiring conductor (3) and the GND conductor plate (4); and a termination circuit (5) connected between the other focal point (3b) of the wiring conductor (3) and the GND conductor plate (4).